Wiring teensy tubes, strands into circuits

After years of building individual electronic components from single molecules and submicroscopic rods, researchers have now linked the tiny devices into prototype circuits.

Separate teams at Harvard University and Delft University of Technology in the Netherlands have built the circuits out of transistors, wires, and other components as narrow as a few atoms across. The circuits can carry out simple computations, such as adding two bits together.

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